I think the problem may be that you used the Poser installer instead of the DS installer.
The Poser installer will place them in "Runtime/Libraries/Character/" and you will have to select "Poser Formats" to find that folder

I had trouble with this too with most of the West Park items. I gave up on trying to load it into daz runtime and redirected the installation to my Poser 8 runtime. It worked once I had it loaded in the Poser 8 runtime.